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Types of AR-15 Upper Receivers Compared

With so many pre-built uppers out there (and the obvious demand for all kinds of lower receivers) many AR-15 owners and builders don’t give much thought to the type of stripped upper receiver they want for their rifle or pistol. After all, its only purpose is to mount the barrel and house the bolt carrier […]

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What is an 80% Lower Jig?

If you researched how to build an AR-15 from scratch, you’ve probably come across the terms “80 lower receiver” or “80% lower”. These are receiver blanks that you can use to build your own black rifle at home. If you use a receiver blank to build your rifle or pistol, you don’t need to visit […]

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